Update app.py

app.py

@@ -25,6 +25,7 @@ feature_view = fs.get_feature_view(
 #                   model_name="air_quality_model",
 #                   evaluation_metric="f1_score",
 #                   sort_metrics_by="max")
+mr = project.get_model_registry()
 model = mr.get_model("air_quality_model",version = 3)
 model_dir = model.download() 
 model = joblib.load(model_dir + "/model.pkl")